[NSFW] What's the difference between "facefuck" and "oral penetration"/"oral insertion" ?

facefuck could be done with a strapon, which is insertion, not penetration. Otherwise I can’t imagine any difference given the 2 oral * ones, but that could be just me.

It’s when the penetrater/inserter is active/dominant and the mouth-haver is passive. Often, there’s an implied vigorousness to the action, as well.

Tentacles are exempt, I feel.

@Background Pony #C843
If the penetrator/inserter (meaning the dick/strapon owner) is passive, that’s a blowjob and not penetration/insertion. Otherwise I can see what you mean.